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检索条件"任意字段=Conference on Solid State Sensor Arrays - Development and Applications"

共 1073 条记录，以下是301-310 订阅

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Antenna-coupled microbolometers for multi-spectral infrared imaging

Antenna-coupled microbolometers for multi-spectral infrared ...

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32nd conference on Infrared Technology and applications

作者： Weling, Aniruddha S. Henning, Patrick F. Neikirk, Dean P. Han, Sangwook Foster Miller Inc 195 Bear Hill Rd Waltham MA 02451 USA Univ Texas Austin Dept Elect & Comp Engn Austin TX 78712 USA

ISBN: (纸本)0819462624

Although the rapid development of 2-D focal plane arrays of thermal infrared (IR) detectors has led to remarkable progress in uncooled IR imaging technology, a major limitation of these sensors is the lack of true on-chip spectral discrimination. Multi-spectral detection capabilities enable rapid, efficient and multi-dimensional scene interpretation that is especially beneficial to advanced IR imaging systems for early threat warning and target recognition applications. We propose a novel design for a monolithic micromachined array of bolometric detectors capable of multi-spectral imaging in the long-wave IR (7-14 mu m) region. The central ingredient of this approach is to employ planar multi-mode antenna structures to efficiently couple incident electromagnetic radiation to a microbolometeric sensing element that is much smaller than the IR wavelength. The wavelength selectivity of such an antenna-coupled detector can be tuned by optimizing its multiple geometric parameters. We present a planar microbolometer design that can accomplish 3-color LWIR imaging with no moving parts analogous to solid-state color videography in the visible region. The proposed effort targets applications of uncooled color IR imaging where the benefits in space, power, weight and complexity will have a significant impact.

关键词： infrared imaging multi-spectral thermal detector microbolometer array FPA sensor

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Advanced imaging sensors at Rockwell Scientific Company

Advanced imaging sensors at Rockwell Scientific Company

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conference on Infrared Detectors and Focal Plane arrays VII

作者： Montroy, JT Garnett, JD Cabelli, SA Loose, M Joshi, A Hughes, G Kozlowski, L Haas, A Wong, S Zandian, M Chen, A Pasko, JG Farris, M Cabelli, CA Cooper, DE Arias, JM Bajaj, J Vural, K Rockwell Sci Co Camarillo CA 93012 USA

ISBN: (纸本)0819444715

The past 2 to 3 years has been a period of explosive growth in technology development for imaging sensors at Rockwell Scientific Co. (RSC). The state of the art has been advanced significantly, resulting in a number of unique advanced imaging sensor products. A few key examples are: 2048 x 2048 sensor chip assemblies (SCA) for ground and space-based applications, 4096 x 4096 mosaic close-butted mosaic FPA assemblies, a very high performance 10 x 1024 hybridized linear SCA for optical network monitoring and other applications, the revolutionary CMOS ProCam-HD(TM) imaging system-on-a-chip for high definition television (HDTV), and RSC's near-infrared emission microscope camera for VLSI defect detection/analysis. This paper provides selected updates of these products and thereby provides an overview of the ongoing highly fertile period of technology and product development at Rockwell Scientific. A view into future directions for advanced imaging sensors is also provided.

关键词： infrared detectors focal plane array sensor chip assembly astronomy HDTV

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An inherently temperature insensitive fiber Bragg grating force sensor for in-vivo applications 17

An inherently temperature insensitive fiber Bragg grating fo...

引用

conference on Optical Fibers and sensors for Medical Diagnostics and Treatment applications XVII

作者： Arkwright, John W. Parkinson, Luke Papageorgiou, Anthony Flinders Univ S Australia Med Device Res Inst 1284 South Rd Clovelly Pk SA 5042 Australia

ISBN: (纸本)9781510605572;9781510605589

We present a fiber Bragg grating sensor design that provides an inherently athermal response to a transverse applied load. The active element of the sensor is formed from two fibers helically wound around a common axis each containing an FBG element. The helical winding of the fibers is positioned within the transducer so that the FBG elements are coincident and located at the point where the axes of the fibers are in the orthogonal plane to the base of the sensor. An applied load acting on the sensor deflects the fibers sideways so that the upper FBG is compressed and the lower FBG is stretched causing a differential change in the Bragg wavelengths of each element. For small loads, the differential change in wavelength is linearly proportional to the applied force. A change in temperature causes identical change in Bragg wavelength on both FBG elements and therefore does not affect the differential change caused by the applied load. Using this design we have reduced the temperature dependence of our FBG sensors from similar to 13 pm per degrees C to a variation of less than 0.25 pm over a temperature range of 20 - 60 degrees C, with the residual temperature dependence being largely made up of temperature variations in the solid state spectrometer used to acquire data. These sensors are ideally suited for forming sensing arrays for monitoring in-vivo pressures and forces where fluctuations in temperature are unavoidable, and have been used successfully for monitoring the pressure induced beneath compression bandages.

关键词： fiber optic sensing fiber Bragg gratings temperature compensation distributed sensing in-vivo sensing force pressure

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development of a wireless environmental sensor system and MEMS-based RF circuit components

Development of a wireless environmental sensor system and ME...

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13th International conference on solid-state sensors and Actuators and Microsystems, TRANSDUCERS '05

作者： Yoon, Euisik Yun, Kwang-Seok 373-1 Guseong-dong Yuseong-gu Daejeon 305-701 Korea Republic of

ISBN: (纸本)0780389948

This paper reports a miniaturized environmental sensor system integrated with RF communication module. This system has been developed for on-site monitoring of water pollution by heavy metal ions. The system is composed of an electrochemical sensor, a custom potentiostat module, and an RF module for wireless communication. Also, we present monolithic MEMS VCOs integrated with high-Q MEMS inductors and MEMS transmission lines for low-power wireless transceiver applications. Phase noise of the proposed MEMS VCOs has been improved by more than 7 dBc/Hz compared with their CMOS counterparts at 1MHz offset from center frequencies of 5GHz and 13 GHz, respectively. © 2005 IEEE.

关键词： Electrochemical sensors

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Acoustic Tweezers Using Bisymmetric Coherent Surface Acoustic Waves for Reconfigurable Modulation of Particle Multimers 22

Acoustic Tweezers Using Bisymmetric Coherent Surface Acousti...

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22nd International conference on solid-state sensors, Actuators and Microsystems, Transducers 2023

作者： Pan, Hemin Mei, Deqing Wang, Yancheng Zhejiang University State Key Laboratory Of Fluid Power And Mechatronic Systems School Of Mechanical Engineering Hangzhou China Zhejiang University Key Laboratory Of Advanced Manufacturing Technology Of Zhejiang Province School Of Mechanical Engineering Hangzhou China

ISBN: (纸本)9784886864352

This paper presents a novel particle multimer manipulation approach by using acoustic tweezers with optimized bisymmetric coherent design. The acoustic tweezers enable contactless morphology modulation of individual multimers and patterning arrays by regulating the shapes of acoustic field to the desired distributions with high accuracy. Rapid switching of multimer patterning arrays and morphology modulation of individual multimers with totally eleven patterns (hexamers) can be achieved by real-time regulating the frequency, amplitude, and phase relationships of signals input to interdigital transducers (IDTs). Therefore, this technique can be applied to reversible assembly and dynamic manipulation of particles and/or cells in biomedical applications. © 2023 IEEJ.

关键词： Acoustic tweezers Morphology modulation Particle manipulation Reconfigurable assembly Surface acoustic wave

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Design and Implementation of QCM Virtual Sensing Schemes for Analyses of Volatile Organic Compounds

Design and Implementation of QCM Virtual Sensing Schemes for...

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作者： Nicholas Colby Speller Louisiana State University and Agricultural and Mechanical College

学位级别：博士

sensor arrays have evolved as powerful approaches for providing detection and discrimination of volatile organic compounds (VOCs) as required across numerous analytical applications. Such systems typically comprise a number of cross reactive sensor elements, which generate analyte specific response patterns upon exposure to VOCs, and are known as multisensor arrays. When evaluated using statistical methods, these response patterns facilitate classification of VOCs. As an alternative, a single dynamically operated sensor could also be used to generate analyte specific response patterns. This approach is known as a virtual sensor array (VSA) and can exhibit significant advantages when compared to MSAs. Some advantages include lower power consumption, sensor drift, material cost, and experimental preparatory time. Furthermore, several dynamically operated sensors could be used in tandem (using the MSA and VSA scheme in a complementary fashion) to fabricate virtual multisensor arrays (V-MSAs). Such systems would exhibit greater data density than either the MSA or VSA, and are promising for samples that are particularly challenging to discriminate. Among the various systems utilized for VOC discrimination, sorption based systems hold considerable promise because they are simple and inexpensive yet highly effective. This dissertation is focused on the development of array sensing schemes using ionic liquids (ILs), a group of uniform materials based on organic salts (GUMBOS), and binary blends of either IL or GUMBOS with polymer as recognition elements and the quartz crystal microbalance (QCM) as the transducer. Towards this end, ILs, which are defined as organic salts with melting points below 100 °C, and group of uniform materials based on organic salts (GUMBOS) which extend the melting range of ILs to 250 °C to encompass similar solid phase salts, were used to design the first examples of QCM based VSAs, and V-MSAs, for pure VOC and complex mixture analyses. Furthermore

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Optical and Noise Performance of CMOS solid-state Photomultipliers

Optical and Noise Performance of CMOS Solid-State Photomulti...

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conference on Photonic Fiber and Crystal Devices - Advances in Materials and Innovations in Device applications IV

作者： Chen, Xiao Jie Johnson, Erik B. Staples, Christopher J. Chapman, Eric Alberghini, Guy Christian, James F. Radiat Monitoring Devices Inc Watertown MA 02472 USA

ISBN: (纸本)9780819482778

solid-state photomultipliers (SSPM) are photodetectors composed of avalanche photodiode pixel arrays operating in Geiger mode (biased above diode breakdown voltage). They are built using CMOS technology and can be used in a variety of applications in high energy and nuclear physics, medical imaging and homeland security related areas. The high gain and low cost associated with the SSPM makes it an attractive alternative to existing photodetectors such as the photomultiplier tube (PMT). The capability of integrating CMOS on-chip readout circuitry on the same substrate as the SSPM also provides a compact and low-power-consumption solution to photodetector applications with stringent area and power requirements. The optical performance of the SSPM, specifically the detection and quantum efficiencies, can depend on the geometry and the doping profile associated with each photodiode pixel. The noise associated with the SSPM not only includes dark noise from each pixel, but also consists of excess noise terms due to after pulsing and inter-pixel cross talk. The magnitude of the excess noise terms can depend on biasing conditions, temperature, as well as pixel and inter-pixel dimensions. We present the optical and noise performance of SSPMs fabricated in a conventional CMOS process, and demonstrate the dependence of the SSPM performance on pixel/inter-pixel geometry, doping profile, temperature, as well as bias conditions. The continuing development of CMOS SSPM technology demonstrated here shows that low cost and high performance solid state photodetectors are viable solutions for many existing and future optical detection applications.

关键词： SSPM CMOS photodector Geiger mode avalanche diode

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Pushing technologies: Single-photon avalanche diode arrays

Pushing technologies: Single-photon avalanche diode arrays

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conference on Advancements in Adaptive Optics

作者： Zappa, F Tisa, S Cova, S Maccagnani, P Bonaccini, D Bonanno, G Belluso, M Saletti, R Roncella, R Politecn Milan Dipartimento Elettr I-20133 Milan Italy

ISBN: (纸本)0819454222

We present the development of silicon monolithic arrays of 60 photon-counters (SPADA, Single-Photon Avalanche Diode Array) for the visible. The SPADA system is suitable for state-of-the-art Adaptive Optics operations and Fast Transient image acquisitions, at quite a fraction of the current cost of imaging arrays. The fabricated solid-state photon counters are rugged, easy to be integrated in the optical system. They are free from readout noise and provide very fast frame-rates (>10kHz, for visible corrections) and nanosecond electronic gating (for ranging the up-going laser beam). The detection head has been integrated into an optomechanical system suitable for alignment and focusing in available astrophysics telescopes. The detection electronics includes an integrated Active Quenching Circuits for each pixel of the array. The real-time data processing board is implemented into FPGA and DSP and is configurable for dealing with different applications: the extraction of the curvature wavefront for AO applications, and the acquisition and processing of two-dimensional images with fast frame rate. A remote host computer controls all the SPADA blocks and uploads the processed information and images. We report the optical and electrical characterization of the detectors and the associated electronics.

关键词： SPAD single-photon avalanche diode adaptive optics fast transient phenomena imaging detectors array detectors

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Live Demonstration: Real-Time and High-Speed Ion Imaging Using CMOS ISFET arrays

Live Demonstration: Real-Time and High-Speed Ion Imaging Usi...

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IEEE Biomedical Circuits and Systems conference (IEEE BioCAS)

作者： Kuang, Lei Zeng, Junming Georgiou, Pantelis Imperial Coll London Ctr Bioinspired Technol Inst Biomed Engn London SW7 2AZ England Imperial Coll London Dept Elect & Elect Engn London SW7 2AZ England

ISBN: (纸本)9781728172040

In this work, a complete Lab-on-chip platform for ion-imaging applications using CMOS ISFET arrays is demonstrated. The platform consists of a front-end chip that integrates 128 x 128 Ion-Sensitive Field Effect Transistors (ISFETs) fabricated in standard CMOS 180nm process, a PCB bench for power management and signal pipeline, a dedicated high-speed data processing system that employs DDR4 SDRAMs on the FPGA development board with a FIFO-to-USB3.0 bridge for data dumping, and an user interface for tuning and monitoring of the 3-D array images. Inspired by CMOS imagers, we present an end-to-end solution for delivering high-frequency ion images either at 1000 fps in real time or in slow-motion replay, for analysing novel ion interactions with the aid of data processing algorithms.

关键词： Array signal processing User interfaces Ions Data processing Real-time systems arrays SDRAM

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SWIR sensor design considerations 5

SWIR sensor design considerations

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5th South African conference on sensors, MEMS, and Electro-Optic Systems (SMEOS)

作者： Goss, Tristan M. Fourie, Henning Viljoen, Johan W. HENSOLDT Optron Pty Ltd Nellmapius Dr ZA-0157 Irene South Africa

ISBN: (纸本)9781510627536

With the emergence of Shortwave Infrared (SWIR) InGaAs detector arrays, designers of electro-optical imaging systems can take advantage of the reduced Rayleigh scattering of the SWIR band when compared to visible, resulting in higher contrast images through haze, mist, rain, fog and challenging atmospheric conditions. Furthermore, from a military standpoint, SWIR is invisible to the human eye, thus enabling covert operations and is a good choice for targeting with laser rangefinders and designators that transmits between 1060 nm and 1570 nm. A SWIR sensor can also be used in night vision applications taking advantage of an atmospheric phenomenon called night sky radiance (or night glow) that emits five to seven times more illumination than starlight, nearly all of it in the SWIR wavelengths. In a typical airborne application a sensor's performance is mechanically constrained by the space/volume available and the aperture size limit. This paper describes a model based trade-off methodology to select the optimal Field of View (FOV) for an aperture limited SWIR sensor. This method balances the influences FOV has on sensitivity and resolution. The SWIR sensor's performance is optimized within mechanical constraints and for the intended application scenarios. In the SWIR band the analysis is expanded to include night time scenarios and laser "see-spot" performance. This model is also adapted for input variable compliance with the industry standard NV-IPM range performance model' enabling cross-correlation between the two model's results. An example of a SWIR sensor analysis applying this design model is presented, highlighting the performance advantages that can be gained by maximizing the aperture utilization and choosing the optimal FOV for an imaging sensor when used in airborne targeting applications.

关键词： SWIR imaging sensor airborne targeting field of view resolution sensitivity performance

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